
#!/bin/bash

for i in {0..255} ; do
	    printf "\x1b[48;5;%sm%3d\e[0m " "$i" "$i"
	        if (( i == 15 )) || (( i > 15 )) && (( (i-15) % 6 == 0 )); then
			        printf "\n";
				    fi
			    done



